Joseph leopold htjbee



No. 808,261. Patented Nov. 18,l 1884.

UNITED .STATES JOsEPH LEOPOLD HUBER,

PATENT OFFICE;

OF HAMBURG, GERMANY.

APPARATUS FOR BREAKING ELECTRIC CIRCUI'l'S.

SPECIFICATION forming part of Letters Patent No.v308,26l, dated November 18, 1884.

Application filed February 15, 1884. (No model.)

T0 all whom t may concern,.-

Be it known that I, JOSEPH LEOPOLD HU- BER, a subject of the German Emperor, and a resident of Hamburg, in the German Empire, have invented certain new and useful Improvements in Apparatus for Breaking Electric Circuits, ofwhich the following is a specification.

My invention relates to improvements in apparatus for breaking electric circuits; and the objects of my improvements are, first, to interrupt the electric circuit in a sure and quick manner; and, second, to prevent the formation of sparks. I attain these objects by the mechanism illustrated in the accoma panying drawings, in which-- Figure l is a top view of a double-circuit breaker. Fig. 2 is av sectional side elevation thereof, and Fig. 3 is a section at the line A B.

Similarletters refer to similar parts throughout the several views.

a and b are two metal plates connected with 'the poles of the electric battery. They are affixed to the lower surface of a plate of wood, ebonite, or other insulating material, and by means of the screws c and d, rigidly united with the springs e andf, which rest in their normal position-i. e., when the circuit is broken on the support g of insulating material. The cam i is pivoted in bearings 7L l1 before the support g, and serves to raise the free endsof the springs k and Z, which form parts of the circuit, together with the fusible wires n and terminals o and p. rIhe prism or eccentric is kept in any position required by the pressure of the springs k and l, and is manipulated by the hand-lever m.

Vhen the lever m and the prism or eccentric fi are in the position illustrated by dotted lines, the springs e and f rest on the springs k and Z, thus making contact. Consequently, the current can pass the conduit. To interrupt the circuit the lever m is 'laid down,Y which at first requires a certain force, because the springs have to be slightly raised by the edge of the prismaticcam or eccentric until the edge passes the vertical plane of the carnpivots, when the pressure ofthe springs th rows the cam and lever m down into the reoumbent position shown.

As the movement of the springs e andf is very short, being limited by the support g,`

the contact between them and the springs k and Z, which touch only at their overlapping ends, is qickly broken when the cam is lowered.

Having thus fully described my invention with reference to a double-circuit breaker, I do not limit myself to such ycombina-tion of two pairs of springs, as such pair of springs may be used alone or in combination with two or more equal pairs; but

IVhat I claim as my invention, and desire to secure by Letters Patent, is-

In a circuit-breaker, the combination, with the two overlapping springs connected with opposite ends of a circuit, of a support, g, beneath one of the springs, limiting its downward'movement, and the other sp ring normally tending to move downward out of contact with the first-mentioned spring, and apivoted cam, i, beneath thelastmentioned spring, having an abrupt shoulder or edge, and 'a lever-arm, m, connected to said cam, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 22d day of January, 1884 JOSEPH LEOPOLD HUBER.

Witnesses:

ALEXANDER SPEon'r, DIEDRIoi-r PETEEsEN. 

